55results about How to "Achieve interference fit" patented technology

The invention discloses a multi-station pinion shaft pressing assembling machine which comprises a stand, a steel-shaft feeding device, a pinion feeding device, a pre-positioning clamp, a shaft pressing assembling device, a transmission mechanism and a control system. The transmission mechanism is arranged on the stand and comprises a motor, a main transmission wheel, an auxiliary transmission wheel and a transmission chain or a transmission belt; the axes of all the transmission wheels and the motor are arranged horizontally; the shaft of the main transmission wheel is connected with the shaft of the motor; the pre-positioning clamp is fixedly connected with the transmission chain or the transmission belt; the motor is controlled by the control system to drive the transmission chain or the transmission belt to transmit intermittently in a positioning way; a shaft dropping station, a pinion pushing station and a shaft pressing assembling station are arranged on the stand along the transmission direction of the transmission chain or the transmission belt; and the steel-shaft feeding device, the pinion feeding device and the shaft pressing assembling device are arranged on the shaft dropping station, the pinion pushing station and the shaft pressing assembling station correspondingly. By adoption of the multi-station pinion shaft pressing assembling machine, the efficiency of assembling the pinion and the steel shaft assembly can be effectively improved, the interference fit of the pinion and the steel shaft can be realized reliably, the discharging can be convenient, the manpower can be saved, and the shaft pressing assembling of the pinion with different types and the steel shaft can be realized through adjustment or reconstruction.

The invention belongs to the field of electrostatic plate-type electric fields and discloses an electrostatic plate type electric field. The electrostatic plate type electric field comprises a shell;multiple high-voltage negative plates, multiple low-voltage negative plates, multiple positive plates, a first connecting rod, a second connecting rod and a third connecting rod are arranged in the shell; the multiple high-voltage negative plates are inserted into the first connecting rod in a penetrating mode and connected with the first connecting rod in an interference fit mode; the multiple low-voltage negative plates are inserted into the second connecting rod in a penetrating mode and connected with the second connecting rod in an interference fit mode; and the multiple positive plates are inserted into the third connecting rod in a penetrating mode and connected with the third connecting rod in an interference fit mode. The electrode plates and the connecting rods of the electrostatic plate type electric field are in interference fit, connection is stable, assembling is convenient, and meanwhile, the invention further provides an assembling tool and an assembling method.

The invention relates to an anti-rotating insulating support and an anti-rotating method thereof. The anti-rotating method is characterized in that the outer side surface of a metal inner sleeve and the inner side surface of a middle medium are respectively provided with a first platform mutually fit along the direction of the pipe length so as to lead one part of a curve surface attached tightlybetween the metal inner sleeve and the middle medium to be attached tightly in a plane; an outer ring of the part of the cross section of the metal inner sleeve, provided with the first platform, is a round flaw shape of a round flaw angle between 15 degrees to 90 degrees; the outer side surface of the middle medium and the inner side surface of the metal outer ring are respectively provided witha second platform fit along the direction of the pipe length so as to lead one part of a curve surface attached tightly between the middle medium and the metal outer ring to be attached tightly in a plane; and an outer ring of the part of the cross section of the middle medium, provided with the second platform, is a round flaw shape of a round flaw angle between 15 degrees to 60 degrees. The invention can prevent relative rotation among three-layer parts of the insulating support, simultaneously has simple method, easy processing, low cost and reliable work.

The invention discloses a constrained ceramic-metal composite bulletproof armor plate and a preparation method thereof. It is composed of a plurality of constrained ceramic-metal composite ballistic-resistant units, and each constrained ceramic-metal composite ballistic-resistant unit includes a metal back plate and a metal constrained plate. and the ceramic block, the metal constraining plate and the ceramic block are arranged on the metal back plate, the ceramic block is arranged inside the metal constraining plate, and are assembled and connected with the metal constraining plate through interference fit. The constrained ceramic-metal composite bulletproof armor plate of the present invention has broad application prospects in various bulletproof occasions such as armed helicopters, armored vehicles, ships and tanks.